Friend, J. A. R. Respiratory medicine / J. A. R. Friend, J. S. Legg. - London : Heinemann Medical Books , 1988. - 304 p. : ill. ; 24 cm. Includes index. ISBN: 0433109092 Subjects--Topical Terms: Respiratory Tract Diseases-------- National Library of Medicine Call No.: WF 140 / F915r 1988